Pipe laser cutting clamp

Abstract

The utility model provides a pipe laser cutting clamp, which belongs to the field of metal processing equipment and comprises a plurality of clamping units which are identical in structure and are matched with one another, each clamping unit comprises a clamping block, a clamping cambered surface matched with a pipe is arranged on each clamping block, a cutting edge is arranged at one end of each clamping cambered surface of each clamping block, and each cutting edge is provided with a clamping groove. The cutting edge protrudes in the radial direction of the pipe, the cutting edge is arranged on the clamping unit, in the process that the clamp clamps the pipe, scratches can be cut on a material head of the pipe through the cutting edge, even the cutting edge is clamped into the material head of the pipe, the relative fixing force of the pipe and the clamp is improved, and the situation that due to relative displacement of the clamp and the pipe, cutting is incomplete is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of metal processing equipment, and in particular relates to a tube laser cutting fixture. Background Technology

[0002] Laser cutting of metal tubes typically involves using a clamping structure to drive a corresponding fixture to hold and fix the tube, which in turn causes the tube and laser cutting head to rotate relative to each other, allowing the laser to cut the tube. Current fixtures usually hold the tube by contacting its curved surface with the outer surface of the tube, utilizing the mutual pressure of the clamping units and the friction between the clamping units and the tube. However, during actual cutting, the tube is prone to slipping relative to the fixture, causing the tube to rotate less than the fixture, resulting in incomplete cutting. The remaining tube material sticks to the tube body, affecting subsequent processing. Summary of the Invention

[0003] In view of the above-mentioned problems in the existing technology, the present invention provides a tube laser cutting fixture, including several clamping units with the same structure and cooperating with each other. Each clamping unit includes a clamping block, and the clamping block is provided with a clamping arc surface that matches the tube. The clamping block is provided with a cutting blade at one end of the clamping arc surface, and the cutting blade protrudes radially along the tube.

[0004] One side of the clamping block is a mounting part for mounting onto the clamping structure, the clamping arc surface is located on the other side relative to the mounting part, one end of the clamping block is provided with an entry guide ramp, and the other end of the clamping block is provided with a mounting platform, and the cutting blade is mounted on the mounting platform.

[0005] The cutting blade includes a base plate for mounting on a mounting table. The base plate is provided with a plurality of saw blades that protrude radially along the pipe. The saw blades have saw teeth on their saw surfaces, and the saw surfaces gradually extend away from the center of the pipe towards the guide slope.

[0006] The base plate has a reinforcing plate on the side away from the center of the tube, and all saw blades are fixedly connected to the reinforcing plate.

[0007] The mounting platform is provided with several guide sliding holes, and the base plate is provided with a guide optical shaft that matches and slides with the guide sliding holes. The cutting blade is slidably mounted on the clamping block along the axial direction of the tube through the cooperation of the guide optical shaft and the guide sliding holes. A return spring is installed between the mounting platform and the base plate. One end of the return spring is in contact with the mounting platform, and the other end of the return spring is in contact with the base plate.

[0008] Wherein, the end of the guide optical axis away from the substrate passes through the mounting platform and is fixedly mounted with a limiting platform, the diameter of which is larger than that of the guide sliding hole.

[0009] The beneficial effects of this utility model are as follows: a cutting blade is provided on the clamping unit. During the process of clamping the pipe, the cutting blade can cut scratches on the pipe head and even get stuck in the pipe head, thereby increasing the relative fixing force between the pipe and the clamp and avoiding incomplete cutting caused by relative displacement between the clamp and the pipe. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of a tube laser cutting fixture.

[0011] Figure 2 This is a three-dimensional structural diagram of the clamping unit.

[0012] Figure 3 This is a three-dimensional structural diagram of the clamping unit from another angle.

[0013] Figure 4 This is an exploded structural diagram of the clamping unit.

[0014] Figure 5 yes Figure 4 A magnified view of point A.

[0015] Figure 6 This is a schematic diagram showing the interaction between the cutting blade and the clamping block when the return spring is in its naturally extended state.

[0016] Figure 7 This is a schematic diagram showing the interaction between the cutting blade and the clamping block when the return spring is in a compressed state. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] As attached Figure 1-7 The illustrated tube laser cutting fixture includes three identical and mutually cooperating clamping units 1, which are evenly arranged along the circumference to form the fixture. Each clamping unit 1 includes a clamping block 2. One side of the clamping block 2 is a mounting part 3 for mounting onto the clamping structure. On the other side of the clamping block 2, opposite to the mounting part 3, there is a clamping arc surface 4 that matches the tube. One end of the clamping block 2 is provided with an entry guide slope 5 made by a chamfering process. The guide slope 5 facilitates guiding the tube into the clamping unit 1. The other end of the clamping block 2 is provided with a mounting platform 6, which is located on one side of the clamping arc surface 4. A cutting blade 7 is slidably mounted on the mounting platform 6, and the cutting blade 7 protrudes radially along the tube.

[0019] In a preferred embodiment, the cutting blade 7 includes an arc-shaped base plate 8 for mounting on the mounting table 6. Two saw blades 9 protruding radially along the pipe are provided on the base plate 8. The saw blades 9 have serrated surfaces, and the saw surfaces gradually extend away from the center of the pipe towards the guide ramp 5. A reinforcing plate 10 is provided on the side of the base plate 8 away from the center of the pipe. All saw blades 9 are fixedly connected to the reinforcing plate 10. The reinforcing plate 10 enhances the structural strength of the saw blades 9 and the entire cutting blade 7. The mounting table 6 has two guide sliding holes 11, and the base plate 8 has two guide sliding holes 11 that match the guide sliding holes 11. The guide optical shaft 12 has a sliding fit, and the guide optical shaft 12 and the guide sliding hole 11 correspond one-to-one. The cutting blade 7 is installed on the clamping block 2 by sliding along the axial direction of the tube through the fit of the guide optical shaft 12 and the guide sliding hole 11. A return spring 13 is installed between the mounting platform 6 and the base plate 8. The return spring 13 is sleeved on the guide optical shaft 12, and one end of the return spring 13 is in contact with the mounting platform 6, and the other end of the return spring 13 is in contact with the base plate 8. The end of the guide optical shaft 12 away from the base plate 8 passes through the mounting platform 6 and is fixedly installed with a limiting platform 14. The diameter of the limiting platform 14 is larger than that of the guide sliding hole 11.

[0020] The clamp provided in this embodiment is installed on the clamping structure of a laser cutting machine. First, the clamping structure causes the three clamping units 1 to separate and move closer to the tube until the end of the tube is inserted between the three clamping units 1 and contacts the cutting blade 7. Then, the clamping structure drives the three clamping units 1 closer together and clamps the end of the tube. During clamping, the saw blade 9 of the cutting blade 7 scrapes the end of the tube, forming scratches or cutting into the end of the tube, improving the fixation between the tube and the clamp and preventing the tube from slipping relative to the clamp. During scraping, the cutting blade 7 is subjected to force and moves closer to the mounting platform 6 while compressing the return spring 13. This prevents jamming caused by the saw blade 9 being unable to cut into the tube due to its hardness, thus affecting the clamp's grip on the tube. When releasing the tube, the cutting blade 7 returns to its original position under the action of the return spring 13.

[0021] After the clamp holds the pipe, it can be pulled out and laser cut. The clamping structure drives the pipe to rotate 360° through the clamp, and the laser cutting head cuts the pipe once, so that the two ends of the pipe are completely separated.

[0022] The above-described embodiments are merely one implementation of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A tube laser cutting fixture, comprising a plurality of clamping units (1) with identical structures and cooperating with each other, characterized in that, The clamping unit (1) includes a clamping block (2), which has a clamping arc surface (4) that matches the pipe. The clamping block (2) has a cutting edge (7) at one end of the clamping arc surface (4), which protrudes radially along the pipe.

2. The tube laser cutting fixture according to claim 1, characterized in that, One side of the clamping block (2) is a mounting part (3) for mounting onto the clamping structure. The clamping arc surface (4) is located on the other side relative to the mounting part (3). One end of the clamping block (2) is provided with an entry guide slope (5), and the other end of the clamping block (2) is provided with a mounting platform (6). The cutting blade (7) is mounted on the mounting platform (6).

3. A tube laser cutting fixture according to claim 2, characterized in that, The cutting blade (7) includes a base plate (8) for mounting on a mounting table (6). The base plate (8) is provided with a plurality of saw blades (9) that protrude radially along the pipe. The saw blades (9) have saw teeth on their saw surfaces, and the saw surfaces gradually extend away from the center of the pipe towards the guide slope (5).

4. A tube laser cutting fixture according to claim 3, characterized in that, The base plate (8) has a reinforcing plate (10) on the side away from the center of the tube, and all saw blades (9) are fixedly connected to the reinforcing plate (10).

5. A tube laser cutting fixture according to claim 4, characterized in that, The mounting platform (6) is provided with a plurality of guide sliding holes (11), and the base plate (8) is provided with a guide optical shaft (12) that matches and slides with the guide sliding holes (11). The cutting blade (7) is installed on the clamping block (2) by sliding along the axial direction of the tube through the cooperation of the guide optical shaft (12) and the guide sliding holes (11). A reset spring (13) is installed between the mounting platform (6) and the base plate (8). One end of the reset spring (13) is in contact with the mounting platform (6), and the other end of the reset spring (13) is in contact with the base plate (8).

6. A tube laser cutting fixture according to claim 5, characterized in that, The end of the guide optical axis (12) away from the substrate (8) passes through the mounting platform (6) and is fixedly mounted with a limiting platform (14), the diameter of which is larger than the guide sliding hole (11).

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